Legend of the Sword by Michael R. Hicks
My rating: 3 of 5 stars
Summary: Six months after the alien Kreelan Empire launched its invasion of human space, the Confederation of Humanity is rapidly growing. The planet of Saint Petersburg, however, would rather see the Confederation destroyed. With a secretly built navy, they have lured the Confederation fleet into a trap, even as the Kreelans prepare another devastating attack.